The effect of metal complexation on hydrogen sulfide transport across the sea-air interface |
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| Authors: | Scott Elliott F Sherwood Rowland |
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| Institution: | (1) Department of Chemistry, University of California, 92715 Irvine, CA, U.S.A.;(2) Present address: Department of Atmospheric Sciences, University of California, 90024 Los Angeles, CA, U.S.A. |
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| Abstract: | Hydrogen sulfide dissolved in surface seawater is distributed into free forms which include the volatile neutral H2S and its conjugate anions, and also into a set of involatile metal complexes. Calculation of the sulfide fraction capable of supporting sea-air flux is sensitive to large uncertainties in complexation equilibrium relationships, both for the sulfides themselves, and for organic ligands competing with them to coordinate dissolved copper. Saturation can be achieved relative to the troposphere if metal interactions are minimized, or if strong sulfide binders are titrated. |
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| Keywords: | Hydrogen sulfides Henry's law sea-air transfer oceanic coordination chemistry metal complexation |
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